ASTM A829/A829M G86200 Introduce

ASTM A829/A829M G86200 is a multi-purpose, chromium-molybdenum, medium carbon alloy grade. The alloying elements give the steel exceptional strength and toughness. The chromium addition increases the steel's resistance to corrosion and oxidation, while the molybdenum adds hardness and strength, with the carbon providing additional strength and higher wear resistance. ASTM A829/A829M G86200 has a variety of uses. It is commonly used in automotive and aircraft parts where high strength and wear resistance are required. It is also used for forging and machining operations in applications that require high-strength components. It is also used to manufacture tools and dies that need to stand up to demanding use.

Smelting temperature:1339°C - 1581°C

Application:Structural alloy steel plate

ASTM A829/A829M G86200 Material Chemical Composition

The chemical composition of the ASTM A829/A829M G86200 steel are as follows:

ElementMinMax
Molybdenum (Mo)0.15000.2500
Nickel (Ni)0.40000.7000
Chromium (Cr)0.35000.6000
PhOsphorus (P)-0.0350
Sulfur (S)-0.0400
Manganese (Mn)0.60000.9000
Silicon (Si)0.15000.4000
Carbon (C)0.17000.2300

ASTM A829/A829M G86200 Material Mechanical Properties

The mechanical properties of the ASTM A829/A829M G86200 steel are as follows:

YieldRp0.2 ≤ 687 (MPa)
TeileRm≤ 548 (MPa)
ImpactKV/Ku11(J)
ElongationA24%
Reduction in cross section on fractureZ43%
As-Heat-Treated ConditionSolution and Aging, Annealing, Ausaging, Q+T,etc
Brinell hardness (HBW)234

ASTM A829/A829M G86200 Material Thermal Properties

The thermal performance parameters of the ASTM A829/A829M G86200 steel are as follows:

Temperature (°C)22239482
Modulus of elasticity (GPa)-784-
Mean coefficient of thermal expaion ×10-6/(°C)--14
Thermal conductivity (W/m·°C)-41.314.2
Specific thermal capacity (J/kg·°C)-211-
Specific electrical resistivity (Ω mm²/m)0.21--
Deity (kg/dm³)--122
Poisson’s coefficient, ν--131